GSTDTAP  > 地球科学
DOI10.1038/s41561-019-0439-y
Early evolution of a young back-arc basin in the Havre Trough
Tontini, Fabio Caratori1; Bassett, Dan1; de Ronde, Cornel E. J.1; Timm, Christian1,2; Wysoczanski, Richard3
2019-10-01
发表期刊NATURE GEOSCIENCE
ISSN1752-0894
EISSN1752-0908
出版年2019
卷号12期号:10页码:856-+
文章类型Article
语种英语
国家New Zealand; Germany
英文摘要

Back-arc basins are found at convergent plate boundaries. Nevertheless, they are zones of significant crustal extension that show volcanic and hydrothermal processes somewhat similar to those of mid-ocean ridges. Accepted models imply the initial rifting and thinning of a pre-existing volcanic arc until seafloor spreading gradually develops over timescales of a few million years. The Havre Trough northeast of New Zealand is a unique place on Earth where the early stages of back-arc basin formation are well displayed in the recent geological record. Here we present evidence that, in this region, rifting of the original volcanic arc occurred in a very narrow area about 10-15 km wide, which could only accommodate minimal stretching for a very short time before mass balance required oceanic crustal accretion. An initial burst of seafloor spreading started around 5.5-5.0 million years ago and concluded abruptly about 3.0-2.5 million years ago, after which arc magmatism dominated the crustal accretion. The sudden transition between these different tectonomagmatic regimes is linked to trench rollback promoted by gradual sinking of the subducting lithosphere, which could have diverted the arc flux outside the region of seafloor spreading and induced the vertical realignment of surface volcanism with the source of arc melts at depth.


领域地球科学 ; 气候变化
收录类别SCI-E
WOS记录号WOS:000488223800016
WOS关键词CENTRAL VOLCANIC REGION ; NORTH-ISLAND ; MAGNETIC-ANOMALIES ; SW PACIFIC ; LAU BASIN ; TYRRHENIAN SEA ; PLATE MOTIONS ; KERMADEC ARC ; NEW-ZEALAND ; EXTENSION
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/187547
专题地球科学
气候变化
作者单位1.GNS Sci, Lower Hutt, New Zealand;
2.Helmholtz Ctr Ocean Res, GEOMAR, Kiel, Germany;
3.NIWA, Wellington, New Zealand
推荐引用方式
GB/T 7714
Tontini, Fabio Caratori,Bassett, Dan,de Ronde, Cornel E. J.,et al. Early evolution of a young back-arc basin in the Havre Trough[J]. NATURE GEOSCIENCE,2019,12(10):856-+.
APA Tontini, Fabio Caratori,Bassett, Dan,de Ronde, Cornel E. J.,Timm, Christian,&Wysoczanski, Richard.(2019).Early evolution of a young back-arc basin in the Havre Trough.NATURE GEOSCIENCE,12(10),856-+.
MLA Tontini, Fabio Caratori,et al."Early evolution of a young back-arc basin in the Havre Trough".NATURE GEOSCIENCE 12.10(2019):856-+.
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